SOLUTION: -5x^3+15^2+20x

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Question 519815: -5x^3+15^2+20x
Found 2 solutions by jim_thompson5910, oberobic:
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!

-5x^3+15x^2+20x

-5x(x^2-3x-4)

-5x(x-4)(x+1)

So -5x^3+15x^2+20x completely factors to -5x(x-4)(x+1)

If you need more help, email me at jim_thompson5910@hotmail.com

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Jim

Answer by oberobic(2304) About Me  (Show Source):
You can put this solution on YOUR website!
-5x^3+15^2+20x = -5x*(x^2 -3x +4) = -5x*(x-4)(x+1)
.
x = 0, -1, or 4
.
+graph%28500%2C500%2C-5%2C5%2C-40%2C100%2C-5%2Ax%5E3%2B15%2Ax%5E2%2B20%2Ax%29+